Service Engine Light On problems of the 2012 Ford Focus

My car was in the shop about 4x's in 1 month. Issue began driving about 45 mph. Went to accelerate felt a sudden jerk & nothing. Look down to see my drive light flashing & am steadily decreasing in speed with no way to accelerate, like in neutral. I luckily was able to get out of oncoming traffic, put the car in park which began to flash. Accelerated a couple times to be sure it responded before driving but the service engine light was on. Driving again, about to make a left turn, not a mile down the road, same thing happened. This time put it in park, accelerated & nothing. Shut off my car to reset it & my car would not turn on. After waiting for the tow truck, the car would just not turn on, everything related to the battery would turn on but the car didn't. In the shop this 1st time a total of 3 days, still unsure about it being fixed (because they just fixed the "electrical" part, not the issue) lo & behold when I turned into my neighborhood same thing happened (drive light flashed & accelerator didn't respond). I get home to park & turn on my car, after attempting to turn it back on, nothing. Another tow truck came the next morning to get it, this time my car was there 7 days. After 2 days of driving the same thing happened I was on a hill almost began rolling backwards into another car until I put it into p & pulled the e break. Car went in they stated that they figured it out & I hoped 3rd x's the charm. Nope, I was on a highway had to pull over away from oncoming traffic decrease the risk of me being hit. 9 days in the shop after ordering a transmission control module for my car & replacing it, it works. Although I was just informed that the same thing is now happening to a friend with a 2013 Ford Focus. It's something that needs to be looked into because loosing the ability to accelerate in the middle of traffic is very dangerous life threatening & scary.